`intructuyen.vn`

DNSSEC	⚠️ Not signed
A	123.30.182.81^{🇻🇳 VTN-1123.30.182.0/24 VNPT}
		PTR	`host164.vdconline.vn`
NS	`ns1.vdconline.vn` ⭐
		A	14.225.41.137^{🇻🇳 VNPT-AS-VN14.225.41.0/24 VNPT}
			PTR	`static.vnpt.vn`
NS	`ns2.vdconline.vn`
		A	14.225.197.109^{🇻🇳 VNPT-AS-VN14.225.197.0/24 VNPT}
			PTR	`static.vnpt.vn`
MX	`mail.intructuyen.vn` ⭐
		A	123.30.182.81^{🇻🇳 VTN-1123.30.182.0/24 VNPT}
			PTR	`host164.vdconline.vn`
SOA	`ns1.vdconline.vn`vdconline@tld 2012-08-28 #25

`vn`

	DNSSEC	🔒 Signed (DS record present)
	NS	`dns-master.vnnic.vn` ⭐
	NS	`a.dns-servers.vn`
	NS	`b.dns-servers.vn`
	NS	`c.dns-servers.vn`
	NS	`d.dns-servers.vn`
	NS	`e.dns-servers.vn`
	NS	`f.dns-servers.vn`
	NS	`g.dns-servers.vn`
	NS	`h.dns-servers.vn`
	SOA	`dns-master.vnnic.vn`postmaster@vnnic.vn serial=2030754474

Subdomains

mail.intructuyen.vn

Same first word

intructuyen.vn

DNS History

4 records (4 active, 0 former)

●NSns1.vdconline.vn2015-08-19 → 2026-05-10 · 2 obs

● 2015-08-19 12:49:02
● 2026-05-10 10:21:58

●NSns2.vdconline.vn2015-08-19 → 2026-05-10 · 2 obs

● 2015-08-19 12:49:02
● 2026-05-10 10:21:58

●MXmail.intructuyen.vn2015-08-19 → 2026-05-10 · 5 obs

● 2015-08-19 12:49:02
● 2026-03-25 14:04:04
○ 2026-03-26 14:10:24
● 2026-03-28 09:54:58
● 2026-05-10 10:21:58

●A123.30.182.812015-08-19 → 2026-05-10 · 5 obs

● 2015-08-19 12:49:02
● 2026-03-25 14:04:04
○ 2026-03-26 14:10:24
● 2026-03-28 09:54:58
● 2026-05-10 10:21:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	e.dns-servers.vn, d.dns-servers.vn, c.dns-servers.vn, a.dns-servers.vn...	-
intructuyen.vn	ns2.vdconline.vn, ns1.vdconline.vn	2 records

✅ Authoritative Response

Server:14.225.197.109

NS records: ns2.vdconline.vn, ns1.vdconline.vn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for intructuyen.vn (unsigned zone)

⏱️ Timing

Total: 4484ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`123.30.182.81`
NS	2	`ns2.vdconline.vn, ns1.vdconline.vn`
MX	1	`mail.intructuyen.vn (pri: 10)`
SOA	1	`ns1.vdconline.vn vdconline.tld`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns2.vdconline.vn, ns1.vdconline.vn)

Analysis

Hierarchy

intructuyen.vn is parent of mail.intructuyen.vn.

IP Addresses

intructuyen.vn points to a single IP: 123.30.182.81.

Other host names, for instance www.honam.com.vn, mail.lienminhhtxhaiphong.org.vn, dienlanhhaiphong.com.vn, honam.com.vn and dlgroup.com.vn share IP numbers with intructuyen.vn.

Name Servers

intructuyen.vn's delegation is to two name servers ns1.vdconline.vn and ns2.vdconline.vn.

intructuyen.vn shares the same name server configuration as other domains, such as pvg.vn, congbaokhanhhoa.gov.vn, thaibinh.edu.vn, vtlhp.vn and itop.vn.

intructuyen.vn shares name servers with other domains at least partially, for example trangan.edu.vn.

Host names with a single IP:

ns1.vdconline.vn resolves to 14.225.41.137.

ns2.vdconline.vn resolves to 14.225.197.109.

Mail Servers

intructuyen.vn is served by a single mail server, mail.intructuyen.vn.

mail.intructuyen.vn points to IP number 123.30.182.81.

intructuyen.vn - robtex.com

intructuyen.vn

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